Day & Night

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Across
  1. 3. A sun beam
  2. 6. Flying rocks
  3. 8. 8 orbiting planets
  4. 9. Go around
Down
  1. 1. Balls of fire
  2. 2. Hidden light
  3. 4. Visible at night
  4. 5. Daytime visibility
  5. 6. Rotation line
  6. 7. Our home